The correct answer is the one in the middle. Mixing food coloring and water
A pure crystalline substance is a substance with an almost perfect regular and periodic pattern in a solid state. This makes this type of substance a hard one compared to an amorphous substance which is soft because of the irregular pattern within.
The Big Bang is a scientific theory about how the universe started, and then made the stars and galaxies we see today. ... Then about 13.8 billion years ago, space expanded very quickly (thus the name "Big Bang"). This started the formation of atoms, which eventually led to the formation of stars and galaxies.
Answer:
E = energy = ? ,
λ = Wavelength = 5.89 × 10^-7 m —> = 589 ×10 ^-9 m ,
h =Planck constant = 6.63 × 10^-34 J.s ,
f = frequency of photo/ electromagnetic radiation = c/λ ,
c = Speed of light in a vacuum = 3 × 10^8 m/s
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I hope I helped you^_^
It's a trick question because all of them contain both iconic and covalent bonds.
Hope it helps!! :) have fun
